CN116716800A - A comb-shaped telescopic device for roller shaft lateral displacement - Google Patents

Abstract

The invention discloses a comb-shaped telescopic device for lateral displacement of a roller shaft, which includes: a movable comb plate, which is anchored on the A-beam body by a transverse sliding mechanism, and the fixed comb plate is arranged on a stainless steel sliding plate, and The fixed comb plate is anchored to the B beam body by pre-embedded fixed anchor bolts. Its characteristic is that the root of the movable comb plate is equipped with a vertical rotation and lateral displacement two-way displacement composed of a transverse roller and a roller support steel pad. Support, the traverse roller shaft is provided on one side of the transverse sliding mechanism by a roller shaft supporting steel pad, and the roller shaft supporting steel pad is welded to the embedded steel bars of the A beam body; the traverse roller shaft, roller shaft The supporting steel backing plate, transverse sliding mechanism, rubber bearing and sliding anchor bolt form a vertical rotation and transverse shifting mechanism. Compared with the prior art, the present invention has a lateral displacement function, fills the gap of a unitary multi-directional displacement comb-shaped telescopic device without a lateral displacement mechanism, is simple to rotate vertically and horizontally, and is easy and fast to process and install.

Description

A comb-shaped telescopic device for roller shaft lateral displacement

Technical field

The invention relates to the technical field of bridge expansion and contraction devices, specifically a comb-shaped expansion and contraction device with roller shaft lateral displacement.

technical background

Bridge telescopic devices mainly include modular telescopic devices and unit-type multi-directional displacement comb-shaped telescopic devices. The modular telescopic device has six-direction displacement technical indicators, of which lateral displacement is a very important indicator. When the temperature difference of a curved viaduct changes, the telescopic device will produce lateral displacement. Especially when an earthquake occurs, the bridge structure will produce severe lateral displacement and longitudinal displacement vibration. However, the unit-type multi-directional displacement comb-shaped telescopic device does not have technical standards for lateral displacement.

Due to the lack of lateral displacement structural technology, the existing unit-type multi-directional displacement comb-shaped telescopic device cannot meet the lateral displacement requirements and seismic resistance requirements caused by the temperature difference changes of curved viaducts, especially when an earthquake occurs, the bridge structure will Severe lateral displacement and longitudinal displacement vibration, and it cannot continue to work normally.

Contents of the invention

The purpose of the present invention is to design a roller shaft lateral displacement comb-shaped telescopic device in view of the shortcomings of the existing unit type comb-teeth telescopic device. The two-way displacement support for rotation and lateral movement is set at the root of the movable comb plate, and together with the transverse sliding mechanism, rubber bearings and sliding anchor bolts, it forms the vertical rotation and lateral displacement anchoring mechanism of the movable comb plate, making the unitized comb tooth shape The telescopic device realizes the lateral displacement function, filling the gap of the unit-type multi-directional displacement comb-shaped telescopic device without lateral displacement mechanism, and innovates the complexity and functionality of the original roller fixed support, making the original fixed rotating support The base is reformed into a rotating and transverse bearing with a simpler structure. The concave and convex fold lines at the root of the movable comb plate are eliminated and replaced with a straight line, making the appearance of the movable comb plate more beautiful and easier to process, manufacture and install, which greatly satisfies the needs of curved viaducts. The lateral displacement requirements and seismic resistance requirements caused by changes in the temperature difference of the beam, especially when the bridge structure produces severe lateral displacements and longitudinal displacement vibrations, can continue to work normally, which better solves the problem of the large lateral displacement of the unit-type multi-directional displacement telescopic device. Technical issues of displacement structures.

The specific technical solution for realizing the present invention is: a roller shaft lateral displacement comb-shaped telescopic device, including: a movable comb plate, a fixed comb plate, and rubber water stops on both sides that are anchored to the A beam body and the B beam body respectively. Belt, the movable comb plate is anchored on the A beam body by a transverse sliding mechanism, the fixed comb plate is set on the stainless steel sliding plate, and the fixed comb plate is anchored on the B beam body by pre-embedded fixed anchor bolts. Its characteristics are: The root of the movable comb plate is provided with a vertically rotating and transverse two-way displacement support composed of a traversing roller and a roller supporting steel pad. The transverse roller is provided with a roller supporting steel pad on the side of the transverse sliding mechanism. On the side, the roller bearing steel backing plate and the embedded steel bars of the A-beam body are welded; the movable comb-tooth plate is set on the transverse sliding mechanism, and the movable comb-tooth plate is anchored to the A-beam body by a set of sliding anchor bolts. On the top, the base of the transverse sliding mechanism and the embedded steel bars of the A-beam body are welded; the movable comb plate is inserted across the expansion joint and the comb teeth of the fixed comb plate, and is placed flat on the stainless steel sliding plate. The plate is slidingly connected to the stainless steel sliding plate and the comb teeth of the fixed comb plate.

The transverse sliding mechanism is provided with a stainless steel sliding piece and a rubber support. The rubber support, the transverse sliding mechanism, the sliding anchor bolt, the transverse roller and the roller support steel pad form the vertical and horizontal rotation of the movable comb plate. Shifting pressure anchor mechanism.

The root of the movable comb plate is provided with a vertical rotation and lateral shift groove and a vertical rotation and lateral shift steel baffle. The vertical rotation and lateral shift steel baffle is welded to the roller support steel pad; the vertical rotation and lateral shift groove It is the deformation joint between the vertically rotating steel baffle and the root of the movable comb plate, which is filled with polyurethane sealant.

The anchor holes on the movable comb plate and the fixed comb plate are circular countersunk holes, in which two anti-loosening washers are arranged and fastened by nuts, sliding anchor bolts and fixed anchor bolts. The movable comb plate and the fixed comb are The tooth plates are anchored on the A beam body and the B beam body respectively.

Compared with the existing technology, the present invention has the function of large lateral displacement, fills the gap of the unit type multi-directional displacement comb-shaped telescopic device without lateral displacement mechanism, has simple vertical rotation and lateral displacement support, convenient and fast processing and installation, and is suitable for The complexity and functionality of the original roller fixed bearing have been improved, and the original fixed rotating bearing has been transformed into a rotating and traversing bearing, with a simpler structure. The concave and convex fold lines at the root of the movable comb plate have been eliminated and replaced with a straight line. The appearance of the movable comb plate is more beautiful, and the processing, production and installation are more convenient. The comb plate is simple and beautiful. It uses two anti-loosening washer bolts to effectively solve the problem of easy loosening of nuts and greatly meets the problem of temperature difference changes in curved viaducts. lateral displacement requirements and seismic resistance requirements, especially when the bridge structure produces severe lateral displacement and longitudinal displacement vibration, it can continue to work normally, which better solves the technical problem of the large lateral displacement structure of the unit-type multi-directional displacement telescopic device. .

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a top view of Figure 1;

Figure 3 is an embodiment diagram;

Figure 4 is a top view of Figure 3.

Detailed ways

Referring to Figures 1 to 2, the present invention consists of a movable comb plate 1, a fixed comb plate 2, a stainless steel sliding plate 3, a vertically rotating and transverse roller 4, a rubber support 5, a transverse sliding mechanism 6, a sliding anchor bolt 7, and a fixed It consists of anchor bolts 8, stainless steel slides 9, roller support steel pads 10, vertical rotation and transverse movement steel baffles 11, vertical rotation and transverse movement grooves 12 and rubber waterstops 13. The movable comb plate 1 is composed of horizontal The sliding mechanism 6 is anchored on the A beam body 14, the fixed comb plate 2 is set on the stainless steel sliding plate 3, and the fixed comb plate 2 is anchored on the B beam body 15 by pre-embedded fixed anchor bolts 8; the movable comb The root of the toothed plate 1 is provided with a vertical rotation and transverse two-way displacement support composed of a traverse roller 4 and a roller support steel backing plate 10. The transverse roller 4 is arranged in the transverse direction by the roller support steel backing plate 10. On one side of the sliding mechanism 6, the roller support steel pad 10 and the embedded steel bars 16 of the A-beam body 14 are welded; the movable comb plate 1 is set on the transverse sliding mechanism 6, and is provided with sliding anchor bolts 7, The movable comb plate 1 is anchored on the A beam body 14, and the base of the transverse sliding mechanism 6 and the embedded steel bars 16 of the A beam body 14 are welded; the movable comb plate 1 spans the expansion joint and the fixed comb plate 2 The comb teeth are inserted into each other and placed flat on the stainless steel sliding plate 3. The movable comb plate 1 is slidingly connected to the comb teeth of the stainless steel sliding plate 3 and the fixed comb plate 2.

The transverse sliding mechanism 6 is provided with a stainless steel sliding piece 9 and a rubber support 5. The rubber support 5, the transverse sliding mechanism 6, the sliding anchor bolt 7, the transverse roller 4 and the roller support steel pad 10 are composed of The vertical rotation and transverse movement anchoring mechanism of the movable comb plate 1.

The root of the movable comb plate 1 is provided with a vertical rotation and lateral shift groove 12 and a vertical rotation and lateral shift steel baffle 11. The vertical rotation and lateral shift steel baffle 11 is welded to the roller support steel pad 10; The vertical rotation and transverse movement groove 12 is a deformation joint between the vertical rotation and transverse movement steel baffle 11 and the root of the movable comb plate 1, and is filled with polyurethane sealant.

Referring to Figure 2, the anchor holes 18 on the movable comb plate 1 and the fixed comb plate 2 are circular countersunk holes, in which two anti-loosening washers are provided and fastened by nuts, sliding anchor bolts 7 and fixed anchor bolts 8 , anchor the movable comb plate 1 and the fixed comb plate 2 to the A beam body 14 and the B beam body 15 respectively.

The present invention will be further described in detail below through specific implementation.

Example 1

Referring to Figures 3 to 4, the present invention is installed and constructed according to the following steps:

(1) Cutting pavement concrete

Divide the installation width according to the temperature at that time, and cut the top concrete of beam A 14 and beam B 15. When excavating the concrete, the main bars and prestressed pipes of the beam must not be damaged, and the uncut asphalt concrete must be protected and the embedded steel bars or For steel plates, count the quantity and make up if missing.

(2) Install the roller bearing steel backing plate and transverse sliding mechanism

Use a 3-meter ruler on the 14th side of the A beam body to subtract the thickness of the movable comb plate 1, the height of the traversing roller 4 and the thickness of the roller support pad 10 from the bridge deck elevation to determine the concrete elevation of the 4 traversing rollers. , next to it is the elevation of the bridge deck minus the thickness of the movable comb plate 1, the thickness of the rubber bearing 5 and the thickness of the transverse sliding mechanism 6. Determine the concrete elevation at the anchor position of the movable comb plate 1, and the movable comb plate 1. There are two concrete surfaces at different heights at the root.

B-beam 15 also uses a 3-meter ruler to determine the top concrete elevation of B-beam 15 by subtracting the thickness of the fixed comb plate 2 and the thickness of the stainless steel sliding plate 3 from the bridge deck elevation. The top elevation of fixing bolt 8 is 2 mm lower than the bridge deck elevation. The influence of the vertical and horizontal slope factors of the bridge must be considered, and the width of the tooth gap must be determined based on the comparison table between the temperature at that time and the installation width. The roller bearing pad 10, the transverse sliding mechanism 6 and the fixing bolts 8 are spot welded and positioned with the embedded steel bars 16 of the A beam body 14 first, and then fully welded after re-inspection.

(3) Pouring the top concrete of the beam body

The concrete of A beam body 14 and B beam body 15, as well as the concrete of the transition section are poured from C50 steel fiber concrete. The vibration must be dense. After pouring, it must be covered with plastic film and sprinkled with water for curing.

(4) Install rubber bearings, stainless steel slide plates and rubber waterstops

Rubber supports 5 are installed on the A beam body 14 and stainless steel slide plates 3 are installed on the B beam body 15. Rubber waterstops 13 are installed on the sides of the A beam body 14 and B beam body 15.

(5) Install the movable comb plate and fixed comb plate

Lift the movable comb plate 1 and the fixed comb plate 2 into place, set two anti-loosening washers in the anchor hole 18, and tighten the nuts with the sliding anchor bolt 7 and the fixed anchor bolt 8 respectively. After tightening the nuts, install them in the screw holes. Polyurethane sealant is poured into the interior, and polyurethane sealant is also poured into the vertical rotation and transverse deformation joints.

(6) Installation completed

After the installation is completed, check the installation situation again. If it is correct, you can clear the site and evacuate.

The above specific implementations are only to further illustrate the present invention and are not intended to limit the patent of the present invention. All equivalent implementations of the present invention should be included in the scope of the claims of the patent of the present invention.

Claims (4)

1. A comb-tooth telescoping device for lateral displacement of a roller shaft, comprising: the device is characterized in that the root of the movable comb plate is provided with a vertical-rotation and lateral-movement bidirectional displacement support consisting of a lateral-movement roller shaft and a roller shaft supporting steel backing plate, the lateral-movement roller shaft is arranged on one side of the lateral sliding mechanism by the roller shaft supporting steel backing plate, and the roller shaft supporting steel backing plate is welded with embedded steel bars of the A beam body; the movable comb plate is arranged on the transverse sliding mechanism, and is anchored on the A beam body by a sleeved sliding anchoring bolt, and a base of the transverse sliding mechanism is welded with embedded bars of the A beam body; the movable comb plate is inserted into the comb teeth of the fixed comb plate through the expansion joint, and is horizontally arranged on the stainless steel sliding plate, and the movable comb plate is in sliding connection with the stainless steel sliding plate and the comb teeth of the fixed comb plate.

2. The comb-shaped telescopic device for transverse displacement of the roll shaft according to claim 1, wherein the transverse sliding mechanism is provided with a stainless steel sliding sheet and a rubber support, and the rubber support, the transverse sliding mechanism, the sliding anchor bolt, the transverse moving roll shaft and the roll shaft supporting steel backing plate form a vertical rotating transverse moving anchor pressing mechanism of the movable comb plate.

3. The comb-shaped telescopic device for transverse displacement of the roll shaft according to claim 1, wherein the root of the movable comb plate is provided with a vertical rotation and transverse movement groove and a vertical rotation and transverse movement steel baffle plate, and the vertical rotation and transverse movement steel baffle plate is welded on a roll shaft supporting steel backing plate; the vertical rotating and transverse moving groove is a deformation joint between the vertical rotating and transverse moving steel baffle plate and the root of the movable comb plate, and polyurethane sealant is filled in the deformation joint.

4. The comb-shaped telescopic device for transverse displacement of the roll shaft according to claim 1, wherein the anchoring holes on the movable comb plate and the fixed comb plate are round counter bores, two anti-loose gaskets are respectively fastened by nuts and sliding anchoring bolts and fixed anchoring bolts after being arranged in the round counter bores, and the movable comb plate and the fixed comb plate are anchored on the A beam body and the B beam body.